軌道検測車による継目部のまくらぎ浮き量の推定精度に関する一考察

抄録

In recent years, a method has been developed to detect floating sleepers using restored track irregularity of vertical displacement by a track inspection car, and this method is being used for track maintenance management. Although this method has been confirmed to have sufficient estimation accuracy in continuous welded rail sections, it has been pointed out that the detection accuracy is low around rail joints in standard length sections. In this paper, as part of an effort to improve the detection accuracy of floating sleepers at rail joints, we report on our investigation into the cause of the decrease in the detection accuracy of floating sleepers at rail joints by measuring vertical displacement and rail seat force at joints where floating sleepers has occurred.